A strap on.

__Inside the box John found a black harness with a fairly large plastic dildo attached to it. Looking up he began to say “What the hell?” but trailed off when he saw both girls in the process of removing their dresses. Both dropped them to the floor and stood in front of him in matching black lace bras and g-strings. “Well,” said Haylee, “I know you want to fuck me. Maybe later. If you’re a VERY good boy. For now though… we thought you might want to watch Bianca fuck me.” Jaw hanging open John stared at her, his eyes repeatedly drawn downwards to the edge of her bra, where her nipples were almost visible. Haylee grinned as Bianca grabbed the strap on and stepped into it. “So what do you want to see John?”